# A148978 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 9
4 32
5 112
6 411
7 1590
8 6222
9 25025
10 101745
11 419657
12 1754602
13 7393290
14 31469686
15 134868306
16 581903908
17 2526957737
18 11027258271
19 48371185519
20 213096893682
21 942519761900
22 4184701749395
23 18640405723677
24 83297501176210
25 373304564910582
26 1677434742864887
27 7556698317628017
28 34120679699125974